Explain nylon6,6 with structure

Nylon comes from a family of synthetic polymers known as polyamide . It was first introduced by Wallace Carothers on 28th February 1935.Nylon 6,6 is a polyamide made by polycondensation of adipic acid  methylenediamine , and contains  a total of 12 carbon atoms in each repeating unit . The properties which make Polyamides suitable for plastic applications are resistance to toughness , thermal stability , good appearance , resistance to chemicals etc .The advantages of Nylon 66 are-                                                                                                                                                                                                                  1.Nylon 6,6 persues excellent abrasion resistance and a high melting point .

2.Nylon 6,6 has  high tensile strength and exhibits only half of shrinkage in steam .

 3. It also provides a very good resistance to photo degradation .

 4.Nylon 6,6 also has good advantage over industrial products because it reduces moisture sensitivity in raw products and has a high dimensional stability and melting point .